rsync.h

   1 /*
   2  * Copyright (C) 1996, 2000 Andrew Tridgell
   3  * Copyright (C) 1996 Paul Mackerras
   4  * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
   5  * Copyright (C) 2003-2008 Wayne Davison
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, visit the http://fsf.org website.
  19  */
  20
  21 #define False 0
  22 #define True 1
  23
  24 #define BLOCK_SIZE 700
  25 #define RSYNC_RSH_ENV "RSYNC_RSH"
  26 #define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO"
  27
  28 #define RSYNC_NAME "rsync"
  29 /* RSYNCD_SYSCONF is now set in config.h */
  30 #define RSYNCD_USERCONF "rsyncd.conf"
  31
  32 #define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
  33 #define URL_PREFIX "rsync://"
  34
  35 #define SYMLINK_PREFIX "/rsyncd-munged/"
  36 #define SYMLINK_PREFIX_LEN ((int)sizeof SYMLINK_PREFIX - 1)
  37
  38 #define BACKUP_SUFFIX "~"
  39
  40 /* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
  41    incompatible with older versions :-( */
  42 #define CHAR_OFFSET 0
  43
  44 /* These flags are only used during the flist transfer. */
  45
  46 #define XMIT_TOP_DIR (1<<0)
  47 #define XMIT_SAME_MODE (1<<1)
  48 #define XMIT_SAME_RDEV_pre28 (1<<2)     /* protocols 20 - 27  */
  49 #define XMIT_EXTENDED_FLAGS (1<<2)      /* protocols 28 - now */
  50 #define XMIT_SAME_UID (1<<3)
  51 #define XMIT_SAME_GID (1<<4)
  52 #define XMIT_SAME_NAME (1<<5)
  53 #define XMIT_LONG_NAME (1<<6)
  54 #define XMIT_SAME_TIME (1<<7)
  55 #define XMIT_SAME_RDEV_MAJOR (1<<8)     /* protocols 28 - now (devices only) */
  56 #define XMIT_NO_CONTENT_DIR (1<<8)      /* protocols 30 - now (dirs only) */
  57 #define XMIT_HLINKED (1<<9)             /* protocols 28 - now */
  58 #define XMIT_SAME_DEV_pre30 (1<<10)     /* protocols 28 - 29  */
  59 #define XMIT_USER_NAME_FOLLOWS (1<<10)  /* protocols 30 - now */
  60 #define XMIT_RDEV_MINOR_8_pre30 (1<<11) /* protocols 28 - 29  */
  61 #define XMIT_GROUP_NAME_FOLLOWS (1<<11) /* protocols 30 - now */
  62 #define XMIT_HLINK_FIRST (1<<12)        /* protocols 30 - now (HLINKED files only) */
  63
  64 /* These flags are used in the live flist data. */
  65
  66 #define FLAG_TOP_DIR (1<<0)     /* sender/receiver/generator */
  67 #define FLAG_FILE_SENT (1<<1)   /* sender/receiver/generator */
  68 #define FLAG_DIR_CREATED (1<<1) /* generator */
  69 #define FLAG_CONTENT_DIR (1<<2) /* sender/receiver/generator */
  70 #define FLAG_MOUNT_DIR (1<<3)   /* sender/generator (dirs only) */
  71 #define FLAG_SKIP_HLINK (1<<3)  /* receiver/generator (w/FLAG_HLINKED) */
  72 #define FLAG_DUPLICATE (1<<4)   /* sender */
  73 #define FLAG_MISSING_DIR (1<<4) /* generator */
  74 #define FLAG_HLINKED (1<<5)     /* receiver/generator (checked on all types) */
  75 #define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */
  76 #define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */
  77 #define FLAG_HLINK_LAST (1<<7)  /* receiver/generator */
  78 #define FLAG_HLINK_DONE (1<<8)  /* receiver/generator (checked on all types) */
  79 #define FLAG_LENGTH64 (1<<9)    /* sender/receiver/generator */
  80 #define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */
  81 #define FLAG_TIME_FAILED (1<<11)/* generator */
  82
  83 /* These flags are passed to functions but not stored. */
  84
  85 #define FLAG_DIVERT_DIRS (1<<16)/* sender */
  86
  87 #define BITS_SET(val,bits) (((val) & (bits)) == (bits))
  88 #define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))
  89 #define BITS_EQUAL(b1,b2,mask) (((unsigned)(b1) & (unsigned)(mask)) \
  90                              == ((unsigned)(b2) & (unsigned)(mask)))
  91
  92 /* update this if you make incompatible changes */
  93 #define PROTOCOL_VERSION 30
  94
  95 /* This is used when working on a new protocol version in CVS, and should
  96  * be a new non-zero value for each CVS change that affects the protocol.
  97  * It must ALWAYS be 0 when the protocol goes final! */
  98 #define SUBPROTOCOL_VERSION 0
  99
 100 /* We refuse to interoperate with versions that are not in this range.
 101  * Note that we assume we'll work with later versions: the onus is on
 102  * people writing them to make sure that they don't send us anything
 103  * we won't understand.
 104  *
 105  * Interoperation with old but supported protocol versions
 106  * should cause a warning to be printed.  At a future date
 107  * the old protocol will become the minimum and
 108  * compatibility code removed.
 109  *
 110  * There are two possible explanations for the limit at
 111  * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
 112  * do not interoperate with us, and (more likely) so that we can
 113  * detect an attempt to connect rsync to a non-rsync server, which is
 114  * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
 115  * MAX_PROTOCOL_VERSION. */
 116
 117 #define MIN_PROTOCOL_VERSION 20
 118 #define OLD_PROTOCOL_VERSION 25
 119 #define MAX_PROTOCOL_VERSION 40
 120
 121 #define FILECNT_LOOKAHEAD 1000
 122
 123 #define RSYNC_PORT 873
 124
 125 #define SPARSE_WRITE_SIZE (1024)
 126 #define WRITE_SIZE (32*1024)
 127 #define CHUNK_SIZE (32*1024)
 128 #define MAX_MAP_SIZE (256*1024)
 129 #define IO_BUFFER_SIZE (4092)
 130 #define MAX_BLOCK_SIZE ((int32)1 << 17)
 131
 132 /* For compatibility with older rsyncs */
 133 #define OLD_MAX_BLOCK_SIZE ((int32)1 << 29)
 134
 135 #define IOERR_GENERAL   (1<<0) /* For backward compatibility, this must == 1 */
 136 #define IOERR_VANISHED  (1<<1)
 137 #define IOERR_DEL_LIMIT (1<<2)
 138
 139 #define MAX_ARGS 1000
 140 #define MAX_BASIS_DIRS 20
 141 #define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
 142
 143 #define MPLEX_BASE 7
 144
 145 #define NO_FILTERS      0
 146 #define SERVER_FILTERS  1
 147 #define ALL_FILTERS     2
 148
 149 #define XFLG_FATAL_ERRORS       (1<<0)
 150 #define XFLG_OLD_PREFIXES       (1<<1)
 151 #define XFLG_ANCHORED2ABS       (1<<2) /* leading slash indicates absolute */
 152 #define XFLG_ABS_IF_SLASH       (1<<3) /* leading or interior slash is absolute */
 153 #define XFLG_DIR2WILD3          (1<<4) /* dir/ match gets trailing *** added */
 154
 155 #define ATTRS_REPORT            (1<<0)
 156 #define ATTRS_SKIP_MTIME        (1<<1)
 157
 158 #define FULL_FLUSH      1
 159 #define NORMAL_FLUSH    0
 160
 161 #define PDIR_CREATE     1
 162 #define PDIR_DELETE     0
 163
 164 /* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
 165 #define FNAMECMP_BASIS_DIR_LOW  0x00 /* Must remain 0! */
 166 #define FNAMECMP_BASIS_DIR_HIGH 0x7F
 167 #define FNAMECMP_FNAME          0x80
 168 #define FNAMECMP_PARTIAL_DIR    0x81
 169 #define FNAMECMP_BACKUP         0x82
 170 #define FNAMECMP_FUZZY          0x83
 171
 172 /* For use by the itemize_changes code */
 173 #define ITEM_REPORT_ATIME (1<<0)
 174 #define ITEM_REPORT_CHANGE (1<<1)
 175 #define ITEM_REPORT_SIZE (1<<2)     /* regular files only */
 176 #define ITEM_REPORT_TIMEFAIL (1<<2) /* symlinks only */
 177 #define ITEM_REPORT_TIME (1<<3)
 178 #define ITEM_REPORT_PERMS (1<<4)
 179 #define ITEM_REPORT_OWNER (1<<5)
 180 #define ITEM_REPORT_GROUP (1<<6)
 181 #define ITEM_REPORT_ACL (1<<7)
 182 #define ITEM_REPORT_XATTR (1<<8)
 183 #define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
 184 #define ITEM_XNAME_FOLLOWS (1<<12)
 185 #define ITEM_IS_NEW (1<<13)
 186 #define ITEM_LOCAL_CHANGE (1<<14)
 187 #define ITEM_TRANSFER (1<<15)
 188 /* These are outside the range of the transmitted flags. */
 189 #define ITEM_MISSING_DATA (1<<16)          /* used by log_formatted() */
 190 #define ITEM_DELETED (1<<17)               /* used by log_formatted() */
 191 #define ITEM_MATCHED (1<<18)               /* used by itemize() */
 192
 193 #define SIGNIFICANT_ITEM_FLAGS (~(\
 194         ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
 195
 196 #define CFN_KEEP_DOT_DIRS (1<<0)
 197 #define CFN_KEEP_TRAILING_SLASH (1<<1)
 198 #define CFN_DROP_TRAILING_DOT_DIR (1<<2)
 199 #define CFN_COLLAPSE_DOT_DOT_DIRS (1<<3)
 200
 201 #define SP_DEFAULT 0
 202 #define SP_KEEP_DOT_DIRS (1<<0)
 203
 204 #define CD_NORMAL 0
 205 #define CD_SKIP_CHDIR 1
 206
 207 /* Log-message categories.  FLOG only goes to the log file, not the client;
 208  * FCLIENT is the opposite. */
 209 enum logcode {
 210     FNONE=0, /* never sent */
 211     FERROR_XFER=1, FINFO=2, /* sent over socket for any protocol */
 212     FERROR=3, FWARNING=4, /* sent over socket for protocols >= 30 */
 213     FERROR_SOCKET=5, FLOG=6, /* only sent via receiver -> generator pipe */
 214     FERROR_UTF8=8, /* only sent via receiver -> generator pipe */
 215     FCLIENT=7 /* never transmitted (e.g. server converts to FINFO) */
 216 };
 217
 218 /* Messages types that are sent over the message channel.  The logcode
 219  * values must all be present here with identical numbers. */
 220 enum msgcode {
 221         MSG_DATA=0,     /* raw data on the multiplexed stream */
 222         MSG_ERROR_XFER=FERROR_XFER, MSG_INFO=FINFO, /* remote logging */
 223         MSG_ERROR=FERROR, MSG_WARNING=FWARNING, /* protocol-30 remote logging */
 224         MSG_ERROR_SOCKET=FERROR_SOCKET, /* sibling logging */
 225         MSG_ERROR_UTF8=FERROR_UTF8, /* sibling logging */
 226         MSG_LOG=FLOG, MSG_CLIENT=FCLIENT, /* sibling logging */
 227         MSG_REDO=9,     /* reprocess indicated flist index */
 228         MSG_FLIST=20,   /* extra file list over sibling socket */
 229         MSG_FLIST_EOF=21,/* we've transmitted all the file lists */
 230         MSG_IO_ERROR=22,/* the sending side had an I/O error */
 231         MSG_NOOP=42,    /* a do-nothing message */
 232         MSG_SUCCESS=100,/* successfully updated indicated flist index */
 233         MSG_DELETED=101,/* successfully deleted a file on receiving side */
 234         MSG_NO_SEND=102,/* sender failed to open a file we wanted */
 235         MSG_DONE=86     /* current phase is done */
 236 };
 237
 238 #define NDX_DONE -1
 239 #define NDX_FLIST_EOF -2
 240 #define NDX_FLIST_OFFSET -101
 241
 242 #include "errcode.h"
 243
 244 #include "config.h"
 245
 246 /* The default RSYNC_RSH is always set in config.h. */
 247
 248 #include <stdio.h>
 249 #ifdef HAVE_SYS_TYPES_H
 250 # include <sys/types.h>
 251 #endif
 252 #ifdef HAVE_SYS_STAT_H
 253 # include <sys/stat.h>
 254 #endif
 255 #ifdef STDC_HEADERS
 256 # include <stdlib.h>
 257 # include <stddef.h>
 258 #else
 259 # ifdef HAVE_STDLIB_H
 260 #  include <stdlib.h>
 261 # endif
 262 #endif
 263 #ifdef HAVE_STRING_H
 264 # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
 265 #  include <memory.h>
 266 # endif
 267 # include <string.h>
 268 #endif
 269 #ifdef HAVE_STRINGS_H
 270 # include <strings.h>
 271 #endif
 272 #ifdef HAVE_INTTYPES_H
 273 # include <inttypes.h>
 274 #endif
 275 #ifdef HAVE_STDINT_H
 276 # include <stdint.h>
 277 #endif
 278 #ifdef HAVE_UNISTD_H
 279 # include <unistd.h>
 280 #endif
 281
 282 #ifdef HAVE_SYS_PARAM_H
 283 #include <sys/param.h>
 284 #endif
 285
 286 #if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
 287 #include <malloc.h>
 288 #endif
 289
 290 #ifdef HAVE_SYS_SOCKET_H
 291 #include <sys/socket.h>
 292 #endif
 293
 294 #ifdef TIME_WITH_SYS_TIME
 295 #include <sys/time.h>
 296 #include <time.h>
 297 #else
 298 #ifdef HAVE_SYS_TIME_H
 299 #include <sys/time.h>
 300 #else
 301 #include <time.h>
 302 #endif
 303 #endif
 304
 305 #ifdef HAVE_FCNTL_H
 306 #include <fcntl.h>
 307 #else
 308 #ifdef HAVE_SYS_FCNTL_H
 309 #include <sys/fcntl.h>
 310 #endif
 311 #endif
 312
 313 #ifdef HAVE_SYS_IOCTL_H
 314 #include <sys/ioctl.h>
 315 #endif
 316
 317 #ifdef HAVE_SYS_FILIO_H
 318 #include <sys/filio.h>
 319 #endif
 320
 321 #include <signal.h>
 322 #ifdef HAVE_SYS_WAIT_H
 323 #include <sys/wait.h>
 324 #endif
 325 #ifdef HAVE_CTYPE_H
 326 #include <ctype.h>
 327 #endif
 328 #ifdef HAVE_GRP_H
 329 #include <grp.h>
 330 #endif
 331 #include <errno.h>
 332
 333 #ifdef HAVE_UTIME_H
 334 #include <utime.h>
 335 #endif
 336
 337 #ifdef HAVE_SYS_SELECT_H
 338 #include <sys/select.h>
 339 #endif
 340
 341 #ifdef HAVE_SYS_MODE_H
 342 /* apparently AIX needs this for S_ISLNK */
 343 #ifndef S_ISLNK
 344 #include <sys/mode.h>
 345 #endif
 346 #endif
 347
 348 /* these are needed for the uid/gid mapping code */
 349 #include <pwd.h>
 350 #include <grp.h>
 351
 352 #include <stdarg.h>
 353 #include <netinet/in.h>
 354 #include <arpa/inet.h>
 355 #ifdef HAVE_NETDB_H
 356 #include <netdb.h>
 357 #endif
 358 #include <syslog.h>
 359 #include <sys/file.h>
 360
 361 #ifdef HAVE_DIRENT_H
 362 # include <dirent.h>
 363 #else
 364 # define dirent direct
 365 # ifdef HAVE_SYS_NDIR_H
 366 #  include <sys/ndir.h>
 367 # endif
 368 # ifdef HAVE_SYS_DIR_H
 369 #  include <sys/dir.h>
 370 # endif
 371 # ifdef HAVE_NDIR_H
 372 #  include <ndir.h>
 373 # endif
 374 #endif
 375
 376 #ifdef MAJOR_IN_MKDEV
 377 #include <sys/mkdev.h>
 378 # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
 379 #  define makedev mkdev
 380 # endif
 381 #elif defined MAJOR_IN_SYSMACROS
 382 #include <sys/sysmacros.h>
 383 #endif
 384
 385 #ifdef MAKEDEV_TAKES_3_ARGS
 386 #define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
 387 #else
 388 #define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
 389 #endif
 390
 391 #ifdef HAVE_COMPAT_H
 392 #include <compat.h>
 393 #endif
 394
 395 #ifdef HAVE_LIMITS_H
 396 # include <limits.h>
 397 #endif
 398
 399 #if defined USE_ICONV_OPEN && defined HAVE_ICONV_H
 400 #include <iconv.h>
 401 #ifndef ICONV_CONST
 402 #define ICONV_CONST
 403 #endif
 404 #else
 405 #ifdef ICONV_CONST
 406 #undef ICONV_CONST
 407 #endif
 408 #ifdef ICONV_OPTION
 409 #undef ICONV_OPTION
 410 #endif
 411 #ifdef iconv_t
 412 #undef iconv_t
 413 #endif
 414 #define iconv_t int
 415 #endif
 416
 417 #include <assert.h>
 418
 419 #include "lib/pool_alloc.h"
 420
 421 #ifndef HAVE_ID_T
 422 typedef unsigned int id_t;
 423 #endif
 424 #ifndef HAVE_PID_T
 425 typedef int pid_t;
 426 #endif
 427 #ifndef HAVE_MODE_T
 428 typedef unsigned int mode_t;
 429 #endif
 430 #ifndef HAVE_OFF_T
 431 typedef long off_t;
 432 #endif
 433 #ifndef HAVE_SIZE_T
 434 typedef unsigned int size_t;
 435 #endif
 436
 437 #define BOOL int
 438
 439 #ifndef uchar
 440 #define uchar unsigned char
 441 #endif
 442
 443 #ifdef SIGNED_CHAR_OK
 444 #define schar signed char
 445 #else
 446 #define schar char
 447 #endif
 448
 449 #ifndef int16
 450 #if SIZEOF_INT16_T == 2
 451 # define int16 int16_t
 452 #else
 453 # define int16 short
 454 #endif
 455 #endif
 456
 457 #ifndef uint16
 458 #if SIZEOF_UINT16_T == 2
 459 # define uint16 uint16_t
 460 #else
 461 # define uint16 unsigned int16
 462 #endif
 463 #endif
 464
 465 /* Find a variable that is either exactly 32-bits or longer.
 466  * If some code depends on 32-bit truncation, it will need to
 467  * take special action in a "#if SIZEOF_INT32 > 4" section. */
 468 #ifndef int32
 469 #if SIZEOF_INT32_T == 4
 470 # define int32 int32_t
 471 # define SIZEOF_INT32 4
 472 #elif SIZEOF_INT == 4
 473 # define int32 int
 474 # define SIZEOF_INT32 4
 475 #elif SIZEOF_LONG == 4
 476 # define int32 long
 477 # define SIZEOF_INT32 4
 478 #elif SIZEOF_SHORT == 4
 479 # define int32 short
 480 # define SIZEOF_INT32 4
 481 #elif SIZEOF_INT > 4
 482 # define int32 int
 483 # define SIZEOF_INT32 SIZEOF_INT
 484 #elif SIZEOF_LONG > 4
 485 # define int32 long
 486 # define SIZEOF_INT32 SIZEOF_LONG
 487 #else
 488 # error Could not find a 32-bit integer variable
 489 #endif
 490 #else
 491 # define SIZEOF_INT32 4
 492 #endif
 493
 494 #ifndef uint32
 495 #if SIZEOF_UINT32_T == 4
 496 # define uint32 uint32_t
 497 #else
 498 # define uint32 unsigned int32
 499 #endif
 500 #endif
 501
 502 #if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
 503 #define OFF_T off_t
 504 #define STRUCT_STAT struct stat
 505 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF_T
 506 #else
 507 #define OFF_T off64_t
 508 #define STRUCT_STAT struct stat64
 509 #define USE_STAT64_FUNCS 1
 510 #define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF64_T
 511 #endif
 512
 513 /* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
 514  * that's the maximum size the file system can handle and there is no
 515  * 64-bit type available.  The rsync source must therefore take steps
 516  * to ensure that any code that really requires a 64-bit integer has
 517  * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
 518  * counter). */
 519 #if SIZEOF_INT64_T == 8
 520 # define int64 int64_t
 521 # define SIZEOF_INT64 8
 522 #elif SIZEOF_LONG == 8
 523 # define int64 long
 524 # define SIZEOF_INT64 8
 525 #elif SIZEOF_INT == 8
 526 # define int64 int
 527 # define SIZEOF_INT64 8
 528 #elif SIZEOF_LONG_LONG == 8
 529 # define int64 long long
 530 # define SIZEOF_INT64 8
 531 #elif SIZEOF_OFF64_T == 8
 532 # define int64 off64_t
 533 # define SIZEOF_INT64 8
 534 #elif SIZEOF_OFF_T == 8
 535 # define int64 off_t
 536 # define SIZEOF_INT64 8
 537 #elif SIZEOF_INT > 8
 538 # define int64 int
 539 # define SIZEOF_INT64 SIZEOF_INT
 540 #elif SIZEOF_LONG > 8
 541 # define int64 long
 542 # define SIZEOF_INT64 SIZEOF_LONG
 543 #elif SIZEOF_LONG_LONG > 8
 544 # define int64 long long
 545 # define SIZEOF_INT64 SIZEOF_LONG_LONG
 546 #else
 547 /* As long as it gets... */
 548 # define int64 off_t
 549 # define SIZEOF_INT64 SIZEOF_OFF_T
 550 #endif
 551
 552 struct hashtable {
 553         void *nodes;
 554         int32 size, entries;
 555         uint32 node_size;
 556         int key64;
 557 };
 558
 559 struct ht_int32_node {
 560         void *data;
 561         int32 key;
 562 };
 563
 564 struct ht_int64_node {
 565         void *data;
 566         int64 key;
 567 };
 568
 569 #define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
 570 #define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
 571                          : (int64)((struct ht_int32_node*)(node))->key)
 572
 573 #ifndef MIN
 574 #define MIN(a,b) ((a)<(b)?(a):(b))
 575 #endif
 576
 577 #ifndef MAX
 578 #define MAX(a,b) ((a)>(b)?(a):(b))
 579 #endif
 580
 581 #ifndef MAXHOSTNAMELEN
 582 #define MAXHOSTNAMELEN 256
 583 #endif
 584
 585 #define SUM_LENGTH 16
 586 #define SHORT_SUM_LENGTH 2
 587 #define BLOCKSUM_BIAS 10
 588
 589 #ifndef MAXPATHLEN
 590 #define MAXPATHLEN 1024
 591 #endif
 592
 593 /* We want a roomy line buffer that can hold more than MAXPATHLEN,
 594  * and significantly more than an overly short MAXPATHLEN. */
 595 #if MAXPATHLEN < 4096
 596 #define BIGPATHBUFLEN (4096+1024)
 597 #else
 598 #define BIGPATHBUFLEN (MAXPATHLEN+1024)
 599 #endif
 600
 601 #ifndef NAME_MAX
 602 #define NAME_MAX 255
 603 #endif
 604
 605 #ifndef INADDR_NONE
 606 #define INADDR_NONE 0xffffffff
 607 #endif
 608
 609 #ifndef IN_LOOPBACKNET
 610 #define IN_LOOPBACKNET 127
 611 #endif
 612
 613 #if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
 614 #define ACLS_NEED_MASK 1
 615 #endif
 616
 617 union file_extras {
 618         int32 num;
 619         uint32 unum;
 620 };
 621
 622 struct file_struct {
 623         const char *dirname;    /* The dir info inside the transfer */
 624         time_t modtime;         /* When the item was last modified */
 625         uint32 len32;           /* Lowest 32 bits of the file's length */
 626         uint16 mode;            /* The item's type and permissions */
 627         uint16 flags;           /* The FLAG_* bits for this item */
 628         const char basename[1]; /* The basename (AKA filename) follows */
 629 };
 630
 631 extern int file_extra_cnt;
 632 extern int inc_recurse;
 633 extern int uid_ndx;
 634 extern int gid_ndx;
 635 extern int acls_ndx;
 636 extern int xattrs_ndx;
 637
 638 #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
 639 #define EXTRA_LEN (sizeof (union file_extras))
 640 #define PTR_EXTRA_CNT ((sizeof (char *) + EXTRA_LEN - 1) / EXTRA_LEN)
 641 #define DEV_EXTRA_CNT 2
 642 #define DIRNODE_EXTRA_CNT 3
 643 #define SUM_EXTRA_CNT ((MAX_DIGEST_LEN + EXTRA_LEN - 1) / EXTRA_LEN)
 644
 645 #define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
 646 #define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
 647
 648 #define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
 649 #define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
 650 #define ACL_BUMP(f) (acls_ndx ? 1 : 0)
 651
 652 /* The length applies to all items. */
 653 #if SIZEOF_INT64 < 8
 654 #define F_LENGTH(f) ((int64)(f)->len32)
 655 #else
 656 #define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 \
 657                    ? (int64)OPT_EXTRA(f, 0)->unum << 32 : 0))
 658 #endif
 659
 660 /* If there is a symlink string, it is always right after the basename */
 661 #define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
 662
 663 /* The sending side always has this available: */
 664 #define F_PATHNAME(f) (*(const char**)REQ_EXTRA(f, PTR_EXTRA_CNT))
 665
 666 /* The receiving side always has this available: */
 667 #define F_DEPTH(f) REQ_EXTRA(f, 1)->num
 668
 669 /* When the associated option is on, all entries will have these present: */
 670 #define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
 671 #define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
 672 #define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
 673 #define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
 674 #define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
 675
 676 /* These items are per-entry optional: */
 677 #define F_HL_GNUM(f) OPT_EXTRA(f, LEN64_BUMP(f))->num /* non-dirs */
 678 #define F_HL_PREV(f) OPT_EXTRA(f, LEN64_BUMP(f)+inc_recurse)->num /* non-dirs */
 679 #define F_DIR_NODE_P(f) (&OPT_EXTRA(f, LEN64_BUMP(f) \
 680                                 + DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
 681 #define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, LEN64_BUMP(f) + DIRNODE_EXTRA_CNT \
 682                                 + PTR_EXTRA_CNT - 1)->num) /* sender dirs */
 683 #define F_DIR_DEFACL(f) OPT_EXTRA(f, LEN64_BUMP(f))->unum /* receiver dirs */
 684 #define F_DIR_DEV_P(f) (&OPT_EXTRA(f, LEN64_BUMP(f) + ACL_BUMP(f) \
 685                                 + DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
 686
 687 /* This optional item might follow an F_HL_*() item.
 688  * (Note: a device doesn't need to check LEN64_BUMP(f).) */
 689 #define F_RDEV_P(f) (&OPT_EXTRA(f, HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
 690
 691 /* The sum is only present on regular files. */
 692 #define F_SUM(f) ((char*)OPT_EXTRA(f, LEN64_BUMP(f) + HLINK_BUMP(f) \
 693                                     + SUM_EXTRA_CNT - 1))
 694
 695 /* Some utility defines: */
 696 #define F_IS_ACTIVE(f) (f)->basename[0]
 697 #define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
 698
 699 #define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
 700 #define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
 701
 702 /* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
 703 #define DEV_MAJOR(a) (a)[0]
 704 #define DEV_MINOR(a) (a)[1]
 705
 706 /* These access the F_DIRS_NODE_P() values: */
 707 #define DIR_PARENT(a) (a)[0]
 708 #define DIR_FIRST_CHILD(a) (a)[1]
 709 #define DIR_NEXT_SIBLING(a) (a)[2]
 710
 711 /*
 712  * Start the flist array at FLIST_START entries and grow it
 713  * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
 714  */
 715 #define FLIST_START     (32 * 1024)
 716 #define FLIST_LINEAR    (FLIST_START * 512)
 717
 718 /*
 719  * Extent size for allocation pools: A minimum size of 128KB
 720  * is needed to mmap them so that freeing will release the
 721  * space to the OS.
 722  *
 723  * Larger sizes reduce leftover fragments and speed free calls
 724  * (when they happen). Smaller sizes increase the chance of
 725  * freed allocations freeing whole extents.
 726  */
 727 #define NORMAL_EXTENT   (256 * 1024)
 728 #define SMALL_EXTENT    (128 * 1024)
 729
 730 #define FLIST_TEMP      (1<<1)
 731
 732 struct file_list {
 733         struct file_list *next, *prev;
 734         struct file_struct **files, **sorted;
 735         alloc_pool_t file_pool;
 736         void *pool_boundary;
 737         int used, malloced;
 738         int low, high;  /* 0-relative index values excluding empties */
 739         int ndx_start;  /* the start offset for inc_recurse mode */
 740         int flist_num;  /* 1-relative file_list number or 0 */
 741         int parent_ndx; /* dir_flist index of parent directory */
 742         int in_progress, to_redo;
 743 };
 744
 745 #define SUMFLG_SAME_OFFSET      (1<<0)
 746
 747 struct sum_buf {
 748         OFF_T offset;           /**< offset in file of this chunk */
 749         int32 len;              /**< length of chunk of file */
 750         uint32 sum1;            /**< simple checksum */
 751         int32 chain;            /**< next hash-table collision */
 752         short flags;            /**< flag bits */
 753         char sum2[SUM_LENGTH];  /**< checksum  */
 754 };
 755
 756 struct sum_struct {
 757         OFF_T flength;          /**< total file length */
 758         struct sum_buf *sums;   /**< points to info for each chunk */
 759         int32 count;            /**< how many chunks */
 760         int32 blength;          /**< block_length */
 761         int32 remainder;        /**< flength % block_length */
 762         int s2length;           /**< sum2_length */
 763 };
 764
 765 struct map_struct {
 766         OFF_T file_size;        /* File size (from stat)                */
 767         OFF_T p_offset;         /* Window start                         */
 768         OFF_T p_fd_offset;      /* offset of cursor in fd ala lseek     */
 769         char *p;                /* Window pointer                       */
 770         int32 p_size;           /* Largest window size we allocated     */
 771         int32 p_len;            /* Latest (rounded) window size         */
 772         int32 def_window_size;  /* Default window size                  */
 773         int fd;                 /* File Descriptor                      */
 774         int status;             /* first errno from read errors         */
 775 };
 776
 777 #define MATCHFLG_WILD           (1<<0) /* pattern has '*', '[', and/or '?' */
 778 #define MATCHFLG_WILD2          (1<<1) /* pattern has '**' */
 779 #define MATCHFLG_WILD2_PREFIX   (1<<2) /* pattern starts with "**" */
 780 #define MATCHFLG_WILD3_SUFFIX   (1<<3) /* pattern ends with "***" */
 781 #define MATCHFLG_ABS_PATH       (1<<4) /* path-match on absolute path */
 782 #define MATCHFLG_INCLUDE        (1<<5) /* this is an include, not an exclude */
 783 #define MATCHFLG_DIRECTORY      (1<<6) /* this matches only directories */
 784 #define MATCHFLG_WORD_SPLIT     (1<<7) /* split rules on whitespace */
 785 #define MATCHFLG_NO_INHERIT     (1<<8) /* don't inherit these rules */
 786 #define MATCHFLG_NO_PREFIXES    (1<<9) /* parse no prefixes from patterns */
 787 #define MATCHFLG_MERGE_FILE     (1<<10)/* specifies a file to merge */
 788 #define MATCHFLG_PERDIR_MERGE   (1<<11)/* merge-file is searched per-dir */
 789 #define MATCHFLG_EXCLUDE_SELF   (1<<12)/* merge-file name should be excluded */
 790 #define MATCHFLG_FINISH_SETUP   (1<<13)/* per-dir merge file needs setup */
 791 #define MATCHFLG_NEGATE         (1<<14)/* rule matches when pattern does not */
 792 #define MATCHFLG_CVS_IGNORE     (1<<15)/* rule was -C or :C */
 793 #define MATCHFLG_SENDER_SIDE    (1<<16)/* rule applies to the sending side */
 794 #define MATCHFLG_RECEIVER_SIDE  (1<<17)/* rule applies to the receiving side */
 795 #define MATCHFLG_CLEAR_LIST     (1<<18)/* this item is the "!" token */
 796 #define MATCHFLG_PERISHABLE     (1<<19)/* perishable if parent dir goes away */
 797
 798 #define MATCHFLGS_FROM_CONTAINER (MATCHFLG_ABS_PATH | MATCHFLG_INCLUDE \
 799                                 | MATCHFLG_DIRECTORY | MATCHFLG_SENDER_SIDE \
 800                                 | MATCHFLG_NEGATE | MATCHFLG_RECEIVER_SIDE \
 801                                 | MATCHFLG_PERISHABLE)
 802
 803 struct filter_struct {
 804         struct filter_struct *next;
 805         char *pattern;
 806         uint32 match_flags;
 807         union {
 808                 int slash_cnt;
 809                 struct filter_list_struct *mergelist;
 810         } u;
 811 };
 812
 813 struct filter_list_struct {
 814         struct filter_struct *head;
 815         struct filter_struct *tail;
 816         char *debug_type;
 817 };
 818
 819 struct stats {
 820         int64 total_size;
 821         int64 total_transferred_size;
 822         int64 total_written;
 823         int64 total_read;
 824         int64 literal_data;
 825         int64 matched_data;
 826         int64 flist_buildtime;
 827         int64 flist_xfertime;
 828         int64 flist_size;
 829         int num_files;
 830         int num_transferred_files;
 831 };
 832
 833 struct chmod_mode_struct;
 834
 835 struct flist_ndx_item {
 836         struct flist_ndx_item *next;
 837         int ndx;
 838 };
 839
 840 typedef struct {
 841         struct flist_ndx_item *head, *tail;
 842 } flist_ndx_list;
 843
 844 #define EMPTY_ITEM_LIST {NULL, 0, 0}
 845
 846 typedef struct {
 847         void *items;
 848         size_t count;
 849         size_t malloced;
 850 } item_list;
 851
 852 #define EXPAND_ITEM_LIST(lp, type, incr) \
 853         (type*)expand_item_list(lp, sizeof (type), #type, incr)
 854
 855 #define EMPTY_XBUF {NULL, 0, 0, 0}
 856
 857 typedef struct {
 858         char *buf;
 859         size_t pos;  /* pos = read pos in the buf */
 860         size_t len;  /* len = chars following pos */
 861         size_t size; /* size = total space in buf */
 862 } xbuf;
 863
 864 #define INIT_XBUF(xb, str, ln, sz) (xb).buf = (str), (xb).len = (ln), (xb).size = (sz), (xb).pos = 0
 865 #define INIT_XBUF_STRLEN(xb, str) (xb).buf = (str), (xb).len = strlen((xb).buf), (xb).size = (-1), (xb).pos = 0
 866 /* This one is used to make an output xbuf based on a char[] buffer: */
 867 #define INIT_CONST_XBUF(xb, bf) (xb).buf = (bf), (xb).size = sizeof (bf), (xb).len = (xb).pos = 0
 868
 869 #define ICB_EXPAND_OUT (1<<0)
 870 #define ICB_INCLUDE_BAD (1<<1)
 871 #define ICB_INCLUDE_INCOMPLETE (1<<2)
 872
 873 #define RL_EOL_NULLS (1<<0)
 874 #define RL_DUMP_COMMENTS (1<<1)
 875 #define RL_CONVERT (1<<2)
 876
 877 typedef struct {
 878         char name_type;
 879         char fname[1]; /* has variable size */
 880 } relnamecache;
 881
 882 #include "byteorder.h"
 883 #include "lib/mdigest.h"
 884 #include "lib/wildmatch.h"
 885 #include "lib/permstring.h"
 886 #include "lib/addrinfo.h"
 887
 888 #ifndef __GNUC__
 889 #define __attribute__(x)
 890 #else
 891 # if __GNUC__ <= 2
 892 # define NORETURN
 893 # endif
 894 #endif
 895
 896 #define UNUSED(x) x __attribute__((__unused__))
 897 #ifndef NORETURN
 898 #define NORETURN __attribute__((__noreturn__))
 899 #endif
 900
 901 typedef struct {
 902     STRUCT_STAT st;
 903 #ifdef SUPPORT_ACLS
 904     struct rsync_acl *acc_acl; /* access ACL */
 905     struct rsync_acl *def_acl; /* default ACL */
 906 #endif
 907 #ifdef SUPPORT_XATTRS
 908     item_list *xattr;
 909 #endif
 910 } stat_x;
 911
 912 #define ACL_READY(sx) ((sx).acc_acl != NULL)
 913 #define XATTR_READY(sx) ((sx).xattr != NULL)
 914
 915 #include "proto.h"
 916
 917 #ifndef SUPPORT_XATTRS
 918 #define x_stat(fn,fst,xst) do_stat(fn,fst)
 919 #define x_lstat(fn,fst,xst) do_lstat(fn,fst)
 920 #define x_fstat(fd,fst,xst) do_fstat(fd,fst)
 921 #endif
 922
 923 /* We have replacement versions of these if they're missing. */
 924 #ifndef HAVE_ASPRINTF
 925 int asprintf(char **ptr, const char *format, ...);
 926 #endif
 927
 928 #ifndef HAVE_VASPRINTF
 929 int vasprintf(char **ptr, const char *format, va_list ap);
 930 #endif
 931
 932 #if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
 933 #define vsnprintf rsync_vsnprintf
 934 int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
 935 #endif
 936
 937 #if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
 938 #define snprintf rsync_snprintf
 939 int snprintf(char *str, size_t count, const char *fmt,...);
 940 #endif
 941
 942
 943 #ifndef HAVE_STRERROR
 944 extern char *sys_errlist[];
 945 #define strerror(i) sys_errlist[i]
 946 #endif
 947
 948 #ifndef HAVE_STRCHR
 949 # define strchr                 index
 950 # define strrchr                rindex
 951 #endif
 952
 953 #ifndef HAVE_ERRNO_DECL
 954 extern int errno;
 955 #endif
 956
 957 #ifdef HAVE_READLINK
 958 #define SUPPORT_LINKS 1
 959 #endif
 960 #ifdef HAVE_LINK
 961 #define SUPPORT_HARD_LINKS 1
 962 #endif
 963
 964 #ifdef HAVE_SIGACTION
 965 #define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL)
 966 #define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h)
 967 #else
 968 #define SIGACTION(n,h) signal(n,h)
 969 #endif
 970
 971 #ifndef EWOULDBLOCK
 972 #define EWOULDBLOCK EAGAIN
 973 #endif
 974
 975 #ifndef STDIN_FILENO
 976 #define STDIN_FILENO 0
 977 #endif
 978
 979 #ifndef STDOUT_FILENO
 980 #define STDOUT_FILENO 1
 981 #endif
 982
 983 #ifndef STDERR_FILENO
 984 #define STDERR_FILENO 2
 985 #endif
 986
 987 #ifndef S_IRUSR
 988 #define S_IRUSR 0400
 989 #endif
 990
 991 #ifndef S_IWUSR
 992 #define S_IWUSR 0200
 993 #endif
 994
 995 #ifndef ACCESSPERMS
 996 #define ACCESSPERMS 0777
 997 #endif
 998
 999 #ifndef S_ISVTX
1000 #define S_ISVTX 0
1001 #endif
1002
1003 #define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
1004
1005 #ifndef _S_IFMT
1006 #define _S_IFMT        0170000
1007 #endif
1008
1009 #ifndef _S_IFLNK
1010 #define _S_IFLNK  0120000
1011 #endif
1012
1013 #ifndef S_ISLNK
1014 #define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
1015 #endif
1016
1017 #ifndef S_ISBLK
1018 #define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
1019 #endif
1020
1021 #ifndef S_ISCHR
1022 #define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
1023 #endif
1024
1025 #ifndef S_ISSOCK
1026 #ifdef _S_IFSOCK
1027 #define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
1028 #else
1029 #define S_ISSOCK(mode) (0)
1030 #endif
1031 #endif
1032
1033 #ifndef S_ISFIFO
1034 #ifdef _S_IFIFO
1035 #define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
1036 #else
1037 #define S_ISFIFO(mode) (0)
1038 #endif
1039 #endif
1040
1041 #ifndef S_ISDIR
1042 #define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
1043 #endif
1044
1045 #ifndef S_ISREG
1046 #define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
1047 #endif
1048
1049 /* work out what fcntl flag to use for non-blocking */
1050 #ifdef O_NONBLOCK
1051 # define NONBLOCK_FLAG O_NONBLOCK
1052 #elif defined SYSV
1053 # define NONBLOCK_FLAG O_NDELAY
1054 #else
1055 # define NONBLOCK_FLAG FNDELAY
1056 #endif
1057
1058 #ifndef INADDR_LOOPBACK
1059 #define INADDR_LOOPBACK 0x7f000001
1060 #endif
1061
1062 #ifndef INADDR_NONE
1063 #define INADDR_NONE 0xffffffff
1064 #endif
1065
1066 #define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode))
1067 #define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
1068
1069 /* Initial mask on permissions given to temporary files.  Mask off setuid
1070      bits and group access because of potential race-condition security
1071      holes, and mask other access because mode 707 is bizarre */
1072 #define INITACCESSPERMS 0700
1073
1074 /* handler for null strings in printf format */
1075 #define NS(s) ((s)?(s):"<NULL>")
1076
1077 /* Convenient wrappers for malloc and realloc.  Use them. */
1078 #define new(type) ((type*)malloc(sizeof (type)))
1079 #define new0(type) ((type*)calloc(1, sizeof (type)))
1080 #define new_array(type, num) ((type*)_new_array((num), sizeof (type), 0))
1081 #define new_array0(type, num) ((type*)_new_array((num), sizeof (type), 1))
1082 #define realloc_array(ptr, type, num) ((type*)_realloc_array((ptr), sizeof(type), (num)))
1083
1084 /* use magic gcc attributes to catch format errors */
1085  void rprintf(enum logcode , const char *, ...)
1086      __attribute__((format (printf, 2, 3)))
1087 ;
1088
1089 /* This is just like rprintf, but it also tries to print some
1090  * representation of the error code.  Normally errcode = errno. */
1091 void rsyserr(enum logcode, int, const char *, ...)
1092      __attribute__((format (printf, 3, 4)))
1093      ;
1094
1095 /* Make sure that the O_BINARY flag is defined. */
1096 #ifndef O_BINARY
1097 #define O_BINARY 0
1098 #endif
1099
1100 #ifndef HAVE_STRLCPY
1101 size_t strlcpy(char *d, const char *s, size_t bufsize);
1102 #endif
1103
1104 #ifndef HAVE_STRLCAT
1105 size_t strlcat(char *d, const char *s, size_t bufsize);
1106 #endif
1107
1108 #ifndef WEXITSTATUS
1109 #define WEXITSTATUS(stat)       ((int)(((stat)>>8)&0xFF))
1110 #endif
1111 #ifndef WIFEXITED
1112 #define WIFEXITED(stat)         ((int)((stat)&0xFF) == 0)
1113 #endif
1114
1115 #define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
1116
1117 #ifdef HAVE_GETEUID
1118 #define MY_UID() geteuid()
1119 #else
1120 #define MY_UID() getuid()
1121 #endif
1122
1123 #ifdef HAVE_GETEGID
1124 #define MY_GID() getegid()
1125 #else
1126 #define MY_GID() getgid()
1127 #endif
1128
1129 #ifdef FORCE_FD_ZERO_MEMSET
1130 #undef FD_ZERO
1131 #define FD_ZERO(fdsetp) memset(fdsetp, 0, sizeof (fd_set))
1132 #endif
1133
1134 extern int verbose;
1135
1136 #ifndef HAVE_INET_NTOP
1137 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1138 #endif
1139
1140 #ifndef HAVE_INET_PTON
1141 int inet_pton(int af, const char *src, void *dst);
1142 #endif
1143
1144 #ifdef MAINTAINER_MODE
1145 const char *get_panic_action(void);
1146 #endif